[Rd] 32- / 64-bit R query

[Luke Tierney]

One way is to look at .Machine$sizeof.pointer -- 4 on 32-bit and 8 on 64-bit.

luke

On Fri, 18 Aug 2006, McGehee, Robert wrote:

> Hello,
> Is there a way to query whether R has been compiled using 32- or
> 64-bits? A certain memory-intensive simulation will need to be optimized
> differently depending on the memory constraints of the architecture such
> that it will run quickly in 64-bits, and will run within ~3GB under
> 32-bits. And as I'd like to distribute the simulation across a
> mixed-architecture cluster using the snow package, I'd like each R
> process to be optimized accordingly.
>
> Thanks,
> Robert
>
> Robert McGehee
> Quantitative Analyst
> Geode Capital Management, LLC
> 53 State Street, 5th Floor | Boston, MA | 02109
> Tel: 617/392-8396    Fax:617/476-6389
> mailto:robert.mcgehee at geodecapital.com
>
>
>
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-- 
Luke Tierney
Chair, Statistics and Actuarial Science
Ralph E. Wareham Professor of Mathematical Sciences
University of Iowa                  Phone:             319-335-3386
Department of Statistics and        Fax:               319-335-3017
    Actuarial Science
241 Schaeffer Hall                  email:      luke at stat.uiowa.edu
Iowa City, IA 52242                 WWW:  http://www.stat.uiowa.edu